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Finding the Fourth Proportional to 8,751.54, 13,119.03 and 3,489.80

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Solution

The fourth proportional to 8,751.54, 13,119.03 and 3,489.80 is: 5,231.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.54 : 13,119.03 = 3,489.80 : x
  2. Step 2: Convert to fraction form
    8,751.54/13,119.03 = 3,489.80/x
  3. Step 3: Cross multiply
    8,751.54x = 13,119.03 × 3,489.80
  4. Step 4: Simplify right side
    8,751.54x = 45,782,790.89
  5. Step 5: Solve for x
    x = 45,782,790.89/8,751.54
  6. Step 6: Final answer
    x = 5,231.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.